LegacyStackSynthesizer

class aws_cdk.core.LegacyStackSynthesizer

Bases: aws_cdk.core.StackSynthesizer

Use the CDK classic way of referencing assets.

This synthesizer will generate CloudFormation parameters for every referenced asset, and use the CLI’s current credentials to deploy the stack.

  • It does not support cross-account deployment (the CLI must have credentials to the account you are trying to deploy to).

  • It cannot be used with CDK Pipelines. To deploy using CDK Pipelines, you must use the DefaultStackSynthesizer.

  • Each asset will take up a CloudFormation Parameter in your template. Keep in mind that there is a maximum of 200 parameters in a CloudFormation template. To use determinstic asset locations instead, use CliCredentialsStackSynthesizer.

Be aware that your CLI credentials must be valid for the duration of the entire deployment. If you are using session credentials, make sure the session lifetime is long enough.

This is the only StackSynthesizer that supports customizing asset behavior by overriding Stack.addFileAsset() and Stack.addDockerImageAsset().

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.core as cdk

legacy_stack_synthesizer = cdk.LegacyStackSynthesizer()

Methods

add_docker_image_asset(*, source_hash, directory_name=None, docker_build_args=None, docker_build_target=None, docker_file=None, executable=None, network_mode=None, repository_name=None)

Register a Docker Image Asset.

Returns the parameters that can be used to refer to the asset inside the template.

Parameters
  • source_hash (str) – The hash of the contents of the docker build context. This hash is used throughout the system to identify this image and avoid duplicate work in case the source did not change. NOTE: this means that if you wish to update your docker image, you must make a modification to the source (e.g. add some metadata to your Dockerfile).

  • directory_name (Optional[str]) – The directory where the Dockerfile is stored, must be relative to the cloud assembly root. Default: - Exactly one of directoryName and executable is required

  • docker_build_args (Optional[Mapping[str, str]]) – Build args to pass to the docker build command. Since Docker build arguments are resolved before deployment, keys and values cannot refer to unresolved tokens (such as lambda.functionArn or queue.queueUrl). Only allowed when directoryName is specified. Default: - no build args are passed

  • docker_build_target (Optional[str]) – Docker target to build to. Only allowed when directoryName is specified. Default: - no target

  • docker_file (Optional[str]) – Path to the Dockerfile (relative to the directory). Only allowed when directoryName is specified. Default: - no file

  • executable (Optional[Sequence[str]]) – An external command that will produce the packaged asset. The command should produce the name of a local Docker image on stdout. Default: - Exactly one of directoryName and executable is required

  • network_mode (Optional[str]) – Networking mode for the RUN commands during build. Requires Docker Engine API v1.25+. Specify this property to build images on a specific networking mode. Default: - no networking mode specified

  • repository_name (Optional[str]) – (deprecated) ECR repository name. Specify this property if you need to statically address the image, e.g. from a Kubernetes Pod. Note, this is only the repository name, without the registry and the tag parts. Default: - automatically derived from the asset’s ID.

Return type

DockerImageAssetLocation

add_file_asset(*, source_hash, executable=None, file_name=None, packaging=None)

Register a File Asset.

Returns the parameters that can be used to refer to the asset inside the template.

Parameters
  • source_hash (str) – A hash on the content source. This hash is used to uniquely identify this asset throughout the system. If this value doesn’t change, the asset will not be rebuilt or republished.

  • executable (Optional[Sequence[str]]) – An external command that will produce the packaged asset. The command should produce the location of a ZIP file on stdout. Default: - Exactly one of directory and executable is required

  • file_name (Optional[str]) – The path, relative to the root of the cloud assembly, in which this asset source resides. This can be a path to a file or a directory, depending on the packaging type. Default: - Exactly one of directory and executable is required

  • packaging (Optional[FileAssetPackaging]) – Which type of packaging to perform. Default: - Required if fileName is specified.

Return type

FileAssetLocation

bind(stack)

Bind to the stack this environment is going to be used on.

Must be called before any of the other methods are called.

Parameters

stack (Stack) –

Return type

None

synthesize(session)

Synthesize the associated stack to the session.

Parameters

session (ISynthesisSession) –

Return type

None